The spike protein (S) of coronavirus (CoV) attaches the virus to its cellular receptor, angiotensin-converting enzyme 2 (ACE2) . A defined receptor-binding domain (RBD) on S mediates this interaction.

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ELISA Data ：Immobilized SARS-COV-2 Spike RBD, His Tag at 1μg/ml (100μl/Well) on the plate. Dose response curve for Human ACE2, hFc Tag with the EC50 of 8.2ng/ml determined by ELISA .

SPR Data: Human ACE2, hFc Tag captured on Protein A chip, can bind SARS-COV-2 Spike RBD, His Tag with an affinity constant of 13.8nM as determined in a SPR assay .

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